India, Jan. 2 -- Voice over Wi-Fi (VoWiFi), commonly known as Wi-Fi Calling, has been rolled out nationwide by state-owned telecom operator Bharat Sanchar Nigam Limited (BSNL), making the service available to customers across all telecom circles in India.

With the launch of VoWiFi, BSNL subscribers can make and receive voice calls and send text messages over a Wi-Fi network. The service offers reliable and clear connectivity in locations such as homes, offices, basements and remote areas where mobile network coverage is weak or unavailable. No third-party applications are required, as calls are made using the customer's existing mobile number and handset dialler.

The service is based on an IP Multimedia Subsystem (IMS) architecture, ena...